This is a reland of 78bc7852

Original change's description:
> s390x: [baseline] enable sparkplug on s390x
>
> Change-Id: I4646bb0f3f6291c97bb4b397d6248b9bdaa2059a
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3439641
> Reviewed-by: Victor Gomes <victorgomes@chromium.org>
> Commit-Queue: Junliang Yan <junyan@redhat.com>
> Cr-Commit-Position: refs/heads/main@{#78959}

Change-Id: I1f2ce6622d6a6b20c197e23beeee3ee5b0aa32f4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471523Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79176}

Bug: v8:11525
Change-Id: I6a5c1cad0257157df605efb9777737d7fe40a42c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472078Reviewed-by: Camillo Bruni <cbruni@chromium.org>
Commit-Queue: Marja Hölttä <marja@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79175}

Bug: v8:11880, chromium:1296036
Change-Id: Ib27b144c8258218f3ae28a6692f97a8f35679fec
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474675Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79174}

Bug: v8:12639
Change-Id: I10aaa576fdc84d848aa28ed8e07d5793a0954ff1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472023Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79173}

R=​machenbach@chromium.org,alexschulze@chromium.org

Bug: chromium:1298869
Change-Id: Icaba8b1eaf3e9171b39039681e48d54b6a7e479e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472074
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Auto-Submit: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79172}

R=machenbach@chromium.org,alexschulze@chromium.org

Bug: chromium:1298869
Change-Id: I1ef1ac1d48ccbea81cfebcc360194f5003da17d0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474672
Commit-Queue: Tamer Tas <tmrts@chromium.org>
Auto-Submit: Tamer Tas <tmrts@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79171}

This reverts commit 1025bf26.

Reason for revert: https://crbug.com/v8/12645

Original change's description:
> [shared-struct] Prototype JS shared structs
>
> Unlike the Stage 1 proposal, for simplicity the prototype does not add
> any new syntax, instead opting for exposing a SharedStructType
> constructor which takes an array of field names. This type constructor
> returns constructors for shared structs.
>
> Shared structs can be shared across Isolates, are fixed layout, have no
> prototype, have no .constructor, and can only store primitives and
> other shared structs.
>
> The initial prototype does not have TurboFan support.
>
> Bug: v8:12547
> Change-Id: I23bdd819940b42139692bcdb53d372099b0d4426
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3390643
> Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
> Reviewed-by: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> Commit-Queue: Shu-yu Guo <syg@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79156}

Bug: v8:12547
Change-Id: I44f2b8bb7487b4d39ba1282585e0b2282501230f
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474676
Auto-Submit: Michael Achenbach <machenbach@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79170}

This CL adds handling of the BigInt types to TurbofanType to allow
verification of BigInt values in %VerifyType.

Change-Id: I1fc6dea16cbff4d22cfbb5483c5dee50fa932f75
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3256687Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79169}

This reverts commit a1838956.

Reason for revert: https://bugs.chromium.org/p/v8/issues/detail?id=12642

Original change's description:
> [heap] Allow shared references in WeakMap
>
> Shared references can also be stored in WeakMaps and during marking we
> need to be able to deal with such references. In a client GC shared
> objects are treated as live, so we don't need to update or check mark
> bits for such objects.
>
> Bug: v8:11708
> Change-Id: I0dbf797472c4779f462750dab63cc9b012aad091
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3447365
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#79153}

Bug: v8:11708
Change-Id: I113672aceba0ef5aa71f6fbedda7e0df854a437d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3474673
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79168}

Previously, V8_OS_MACOSX was, somewhat confusingly, also used for iOS.
With this CL, V8_OS_DARWIN will be set on both macOS and iOS,
V8_OS_MACOS only on macOS, and V8_OS_IOS only on iOS.

This CL also renames V8_TARGET_OS_MACOSX to V8_TARGET_OS_MACOS and
renames platform-xnu.cc to platform-darwin.cc.

Change-Id: I4bcafc7c337586662114144f6c7ccf47d978da1f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468577Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79167}

Port 89ea44bf

Change-Id: I2fb42032f174f1e8af4903c663f97ea27ab3600f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3467157Reviewed-by: ji qiu <qiuji@iscas.ac.cn>
Commit-Queue: ji qiu <qiuji@iscas.ac.cn>
Cr-Commit-Position: refs/heads/main@{#79166}

Now that we are able to compact map space, we can also get rid of the
map space and allocate maps in the old space instead. This CL introduces
a FLAG_map_space for enabling/disabling the map space but the map space
remains enabled by default for now.

Without a separate space for maps, the GC can't prevent relocation of
maps anymore. Therefore this CL always allows compaction of maps when
running without a map space. Rename flag to --compact-maps to better fit
this scenario.

mkgrokdump and debug_helper also need to be updated to look for maps
also in the old space. The map space is now optional.

Bug: v8:12578
Change-Id: Ic4e4abd0b58bee26e64329b1c92dbccb07d8105a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3424483Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Seth Brenith <seth.brenith@microsoft.com>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79165}

Message tests check the output of a test against an expected file.
Executing with --stress-opt changes the output, since the test will be
run multiple times. For that reason, most message tests explicitly add
the --no-stress-opt flag.

Since this is redundant, and not a per-test setting, just configure this
globally for all message tests instead.

R=machenbach@chromium.org

Bug: v8:12425
Change-Id: I52f1b43da2781fcb6f6bd37e67d483ca69c1c929
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471637Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79164}

Start the implementation of the shared heap write barrier by renaming
CLIENT_TO_SHARED to OLD_TO_SHARED. I planned to do this with the CL
introducing the write barrier but in order to keep that CL smaller do
this here already.

Bug: v8:11708
Change-Id: I204c728e333a4e80c30c0992e43c3cb6752fc660
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468351Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79163}

When a terminate_exception is raised while executing one of the promise
related jobs on the microtask queue, we don't clean up properly, leaving
the async stack in the inspector in an inconsistent state, not cleaning
up the promise stack on the Isolate, and also not resetting the global
current_microtask slot. This CL adds appropriate logic to perform the
correct cleanup.

Fixed: chromium:1297964
Change-Id: I4ec64405d4c66bfe1f0115e7039866447fb10f02
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471815
Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79162}

Change NumberFormat.prototpe.resolvedOptions to return new options in v3.
Also fix a heap allocation assertion bug in GetStringOrBooleanOption
while the useGrouping option is an invalid argument.

https://github.com/tc39/proposal-intl-numberformat-v3

https://chromestatus.com/guide/edit/5707621009981440

Design Doc: https://docs.google.com/document/d/19jAogPBb6W4Samt8NWGZKu47iv0_KoQhBvLgQH3xvr8/edit

Bug: v8:10776
Change-Id: Iaeeb0398b77394db3c941a2706d44b734a1f9d8c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3427298Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Frank Tang <ftang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79161}

When we know that the value in a write barrier is a map, we know that
we are not going to have an old-to-new reference (maps are always in
old generation). Therefore we also don't really need the generational
barrier in RecordWrite. While this is technically correct, we don't
gain much from this optimization. The inline and out-of-line generated
code for the barrier is still the same as in all other cases. Which
means that outside marking we don't even reach the RecordWrite builtin.
Most write barrier executions happen outside incremental marking, hence
performance of the incremental marking barrier isn't critical. This CL
always uses the full RecordWrite builtin using a flag in order to
allow for an easy revert.

This CL is motivated by the shared heap work, which needs an additional
always-on barrier in the future (similar to OLD_TO_NEW) to keep a
OLD_TO_SHARED remembered set up-to-date. While maps are always in the
old generation, they maybe by located in the shared heap.

Bug: v8:11708
Change-Id: I71a6ded2547a0b2bbb9bbbd796dbcae0987b2232
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471854Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79160}

Rolling v8/build: https://chromium.googlesource.com/chromium/src/build/+log/996f747..2fb4402

Rolling v8/buildtools: https://chromium.googlesource.com/chromium/src/buildtools/+log/f413334..93c1552

Rolling v8/buildtools/third_party/libunwind/trunk: https://chromium.googlesource.com/external/github.com/llvm/llvm-project/libunwind/+log/1e0047c..7539622

Rolling v8/third_party/catapult: https://chromium.googlesource.com/catapult/+log/7504934..1fe0550

Rolling v8/third_party/depot_tools: https://chromium.googlesource.com/chromium/tools/depot_tools/+log/e293d3d..988c0af

Rolling v8/third_party/zlib: https://chromium.googlesource.com/chromium/src/third_party/zlib/+log/901a5d9..31e5ad1

Rolling v8/tools/clang: https://chromium.googlesource.com/chromium/src/tools/clang/+log/0a9dd77..3730026

Rolling v8/tools/luci-go: git_revision:b32c149b6abb5e4e9aead1651c7a65562a956858..git_revision:582e828c5a8aaf5cdd0ad1d5465fb9092b71eab8

Rolling v8/tools/luci-go: git_revision:b32c149b6abb5e4e9aead1651c7a65562a956858..git_revision:582e828c5a8aaf5cdd0ad1d5465fb9092b71eab8

R=v8-waterfall-sheriff@grotations.appspotmail.com,mtv-sf-v8-sheriff@grotations.appspotmail.com

Change-Id: If8d8a68c179681c363ac4ef967ef94a4309741bf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3473206
Commit-Queue: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Bot-Commit: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/main@{#79159}

Bug: v8:12638
Change-Id: I88a28b8a17b25ead4a5771870323425772f4f45a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472873Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Francis McCabe <fgm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79158}

Change-Id: I86f34d698bf34590359a980282fa60d6501a6da9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3469628Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79157}

Unlike the Stage 1 proposal, for simplicity the prototype does not add
any new syntax, instead opting for exposing a SharedStructType
constructor which takes an array of field names. This type constructor
returns constructors for shared structs.

Shared structs can be shared across Isolates, are fixed layout, have no
prototype, have no .constructor, and can only store primitives and
other shared structs.

The initial prototype does not have TurboFan support.

Bug: v8:12547
Change-Id: I23bdd819940b42139692bcdb53d372099b0d4426
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3390643Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79156}

- Remove debug printing in callstats.py
- Handle non-version nested JSON files better in callstats.html
- Harden RCS extraction from telemetry JSON files

Change-Id: Ied921e54e6281a456c0a6369d797c21785080036
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471856Reviewed-by: Marja Hölttä <marja@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79155}

https://crrev.com/c/3471558 is causing the following compilation
error on gcc:
```
error: suggest explicit braces to avoid ambiguous 'else'
```

Bug: chromium:1298417
Change-Id: I84a34603664c5ee148cc9ea282c0f8c53319b6d8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3472403Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79154}

Shared references can also be stored in WeakMaps and during marking we
need to be able to deal with such references. In a client GC shared
objects are treated as live, so we don't need to update or check mark
bits for such objects.

Bug: v8:11708
Change-Id: I0dbf797472c4779f462750dab63cc9b012aad091
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3447365Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Dominik Inführ <dinfuehr@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79153}

Change-Id: Id5295f5afe3bc850f2e8726d696f42fd26f07a51
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3470565Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79152}

Guard pages are 4k areas at the beginning and end of each oilpan page
(128kiB) which are meant to be inaccessible. However on ARM64 macOS, the
OS page size is 16kiB, meaning that these are not inaccessible. But we
do pay for these, as they are part of the first and last OS
page. Meaning that we effectively waste 2 * 4kiB = 6.25% of each Oilpan
page.

Since these are not serving their purpose, disable them on this
platform. Another fix could be to make the guard page 16kiB, but given
that the entire oilpan page is 128kiB, this may have adverse effects on
e.g. fragmentation.

Note that this doesn't regress security, as the regions were never
protected to begin with on this platform.

Bug: chromium:1298417
Change-Id: Iad5d05670962780e6d1eeab2bb8a331deb7aa1f3
Cq-Include-Trybots: luci.v8.try:v8_linux_arm64_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471558Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Benoit Lize <lizeb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79151}

Tests are flaky on arm64 sim and arm64 sim - msan bots.

Bug: v8:12637
Change-Id: If9570ceb8af375d12ddd375274aea1ebc0078e63
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471634
Owners-Override: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Commit-Queue: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79150}

Bug: chromium:1298421
Change-Id: I3489b2ce8b11052cdf7c23d89255b30258cc9157
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3471555Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Nico Hartmann <nicohartmann@chromium.org>
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79149}

Use the existing generic js-to-wasm wrapper to handle arguments in
the stack-switching export wrapper, by combining them into a single
helper function parameterized by a boolean.

If the stack_switch parameter is false, the generated js-to-wasm wrapper
is the same as before.

If the stack_switch parameter is true, we allocate and switch to the new
stack before starting to process the parameters. To load the parameters,
we also keep a pointer to the old stack.
After the call, we convert the return value according to the return type
as usual, and then switch back to the parent stack (which may be
different than the original stack, but has a compatible stack frame
layout).
If the stack suspends during the call, control-flow jumps right before
we deconstruct and leave the frame, and returns the Promise as an
externref in the return register.

R=ahaas@chromium.org,jkummerow@chromium.org
CC=fgm@chromium.org

Bug: v8:12191
Change-Id: If3f8eaba8edebe6e98d4738f79f895fdb5322adc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3460410Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Thibaud Michaud <thibaudm@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79148}

Change-Id: I08f3ad3987f633de5073c7f44ebb7a71de2425e2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3470564Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79147}

Using shm_open with a constant name can lead to race conditions with
other V8 instances using (and unlinking) the same shared memory object.

Bug: v8:12636
Change-Id: Ic2d2317f99c1df7aedec2dc52b187c64eea11d2c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468899Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Samuel Groß <saelo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79146}

Change-Id: If34e7927b8d243a22cbcc0e717541c237993ef4e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3470563Reviewed-by: Milad Farazmand <mfarazma@redhat.com>
Commit-Queue: Junliang Yan <junyan@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79145}

For large modules, the current limit of 100k bytes create a large amount
of batches to be processed by the concurrent tasks. Choosing the batch
size larger removes communication overhead.

R=ahaas@chromium.org

Bug: v8:11974, chromium:1297999
Change-Id: Ia03f42895cb0e6bab8fdc52b82ff2ed59869b749
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468904Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79144}

There's only a single callsite that performs retries after allocations
which already can determine the proper GC to invoke without requiring
threading the space backwards.

Bug: v8:12615
Change-Id: I5d5d886162b3eca33eb2fe7bde1e113cd08a094c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468905Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79143}

Avoiding handles in tight loops and setup code improves performance
and reduces code size.

This CL also makes more non-allocating mode more explicit by adding
more DisallowGarbageCollection scopes.

Change-Id: I95b5b1a29204c27a23c42ccd67fff150b3fa4a3e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3460740Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Camillo Bruni <cbruni@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79142}

Outside of unittests, if someone tried to delete a GCed object manually
they would get a silent crash without a stacktrace or any error
messages. This CL replaces the silent crash with an informative message.

Change-Id: Ied8895dab43ce7e3a9bf778b13e77d377d269fce
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468346
Commit-Queue: Omer Katz <omerkatz@chromium.org>
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79141}

which the "no-wasm" build refactoring had accidentally disabled.

Bug: v8:11238
Change-Id: Ia2a4be89024f0bc22a1548dcef21e065e4bb5268
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468341Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79140}

In order to create less tasks that each need to swap permissions for
writing to the code space, merge the two {CopyAndRelocTask} and
{PublishTask} into a single {DeserializeCodeTask}.

This also makes the code a lot shorter, and removes stress from the
scheduler.

R=ahaas@chromium.org

Bug: v8:11974, chromium:1297999
Change-Id: I8866bf7225b0bc2dd4caef79e64cacca9de15519
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468902Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79139}

Avoid the lookup via heap()->incremental_marking() and instead cache
the marking state on GlobalHandles itself.

Change-Id: I2665681ad38983bf16d22e0a82dd10743877e520
Bug: chromium:1294661
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468903Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79138}

Changes:
- Simplify GetRefTypeName.
- Simplify WasmModuleDebug::GetWasmValue.
- Fix some signature issues in tests.

Change-Id: I61b9a48c0fbce0bc9cc74771412bdb8977880697
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468344Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79137}